<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style>
        div{
            width: 200px;
            height: 200px;
            background-color: pink;
        }
    </style>
</head>
<body>
    <div>我是块级元素</div>
    <div>我是块级元素</div>
    <div>
        <strong>文字</strong>
        <h1>标题</h1>
    </div>
    <!-- p里面不能包含div 段落p  h  dt 里面尽量不要放块级元素-->
    <p>
        <div>123</div>
    </p>
</body>
</html>